Stackable bin box



FIG. 1 is an isometric view of a stackable bin box;

FIG. 2 is a top plan view;

FIG. 3 is a rear elevational view;

FIG. 4 is a side elevational view;

FIG. 5 is a front elevational view of a stackable bin box design. 

The ornamental design for a stackable bin box, as shown. 